中国电机工程学报2016，Vol.36Issue(21)：5990-6001,12.DOI:10.13334/j.0258-8013.pcsee.151934
直流/交流电压下GIS绝缘子表面电荷分布特性
Distribution Characteristic for Surface Charge on GIS Insulator Under DC/AC Voltage
摘要
Abstract
Gas insulated switchgear (GIS) equipment is subject to surface charge accumulation under DC or AC voltages in real operation, which could distort the electric field and incur flashover eventually. With the 3D high-resolution surface charge measurement system established on the actual 220kV GIS basin insulator, the present research captured the surface charge distribution characteristics of the insulator under DC and AC voltage with high precision by the probe scanning on the insulator surface. The experiment results show that: 1) Surface charge demonstrated obvious polarity effect under DC voltage. Under positive DC voltage, there accumulated mainly positive surface charges, while under negative one, the polarity of accumulated surface charge was all negative. Whatever the polarity of accumulated surface charge is, as the amplitude of applied voltage increased, the amount of accumulated surface charges mounted up and with the voltage application prolonging, the average value of surface charges kept increasing until it reached saturation. 2) Accumulated in the context of AC voltage were mainly negative surface charges with less density compared to the DC scenario. As the amplitude of applied AC voltage grew, the amount of accumulated homogeneous surface charges firstly increased, then decreased, and finally reached saturation. Above all, the insulating issues occurred by the surface charge accumulation require due attention in the application and maintenance of GIS equipment, and the research in this paper can provide a reference for the optimal design of GIS/GIL insulators.关键词
GIS/绝缘子/表面电荷/积聚特性/分布特性/极性效应Key words
GIS/insulator/surface charge/accumulation/distribution/polarity effect分类
信息技术与安全科学引用本文复制引用
齐波,高春嘉,邢照亮,陈铮铮,赵健康,李成榕..直流/交流电压下GIS绝缘子表面电荷分布特性[J].中国电机工程学报,2016,36(21):5990-6001,12.基金项目
国家重点基础研究发展计划项目(973项目)(2014CB239502)；国家电网公司科技项目(EPRIGYJSKF(2013)2441)。The National Basic Research Program of China (973 Program)(2014CB239502) （973项目）
Science and Technology Project of SGCC (EPRIGYJSKF(2013)2441) （EPRIGYJSKF(2013）
